Polaris Sportsman 500 HO Owner's Manual page 67

Periodic Maintenance Chart
WARNING
Improperly performing the procedures marked with a
component failure and cause an accident, which may result in serious injury or
death. Always have an authorized Polaris dealer perform these services.
Maintenance Chart Key
Perform these operations more often for vehicles subjected to
severe use.
E Emission-related service (Failure to conduct this maintenance will
not void the emissions warranty but may affect emissions.)
Have an authorized Polaris dealer perform these services.
MAINTENANCE
could result in
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